Griffolyn® Under Slab Vapor Retarders & Barriers

Griffolyn^® under slab vapor retarders and barriers prevent moisture from migrating into habitable space and causing problems such as deterioration of flooring adhesive, delamination, bacteria growth and warping. Even if new concrete is allowed to dry to the point where flooring can safely be installed, the absence or improper installation of a vapor retarder can later lead to expensive failures.

The need for an under slab vapor retarder in high humidity areas with high water tables is well understood. However, buildings in arid climates also need vapor retarders. Air conditioning the interior of the structure creates a significant difference in vapor pressure which causes moisture to be drawn out of the ground through the slab and into the space above. Made from durable and strong, internally reinforced polyethylene laminates, the Griffolyn^® System withstands extreme temperatures and is highly resistant to punctures and tears.

Griffolyn^® Under Slab Vapor Retarders and Barriers can be manufactured in sizes to meet project requirements up to 200’ × 200’ (61m × 61m), greatly reducing in-field seams and the potential for failure.

Griffolyn^® Type-65

Reinforced high density 3 ply. General purpose that meets the strength & permeance requirements of most applications

Griffolyn^® Type-65 G

Combines Griffolyn^® reinforced high density polyethylene with a non-woven geotextile. Has superior puncture resistance

Griffolyn^® Type-85

Reinforced high density 5 ply. Offers greater strength & lower permeance for a higher level of integrity in roofing and under slab applications

Griffolyn^® Type-105

Reinforced high density 7 ply. Extra strength and extra low permeance needed to meet additional requirements

Griffolyn^® VAPORguard^®

3 ply. Combines HDPE/LLDPE & aluminum to provide an extremely low permeance for special applications such as radon protection, cold storage, museums & computer rooms

Griffolyn^® 10 Mil Green

Co-extruded polyolefin membrane with superior puncture resistance, impact and tensile strength

Griffolyn^® 15 Mil Green

Co-extruded polyolefin membrane with superior puncture resistance, impact and tensile strength

L20 Black

High strength and durable membrane engineered to work in many environments.

L30 Black

High strength and durable liner material engineered to work in many environments.

FabTape™

Asphaltic mastic. Creates a durable field seam between multiple vapor retarder sections

Griffolyn^® Sealant Tape

Pressure sensitive, adhesive backed polyethylene tape

Pipeboots

Form fitted boots to seal penetrations and pipes.

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